1. You should pay estimated taxes in 2014 if you expect to owe $1,000 or more when you file your federal tax return. Special rules apply to farmers and fishermen.

2. Estimate the amount of income you expect to receive for the year to determine the amount of taxes you may owe. Make sure that you take into account any tax deductions and credits that you will be eligible to claim. Life changes during the year, such as a change in marital status or the birth of a child, can affect your taxes.

3. You normally make estimated tax payments four times a year. The dates that apply to most people are April 15, June 16 and Sept. 15 in 2014, and Jan. 15, 2015.

4. You may pay online or by phone. You may also pay by check or money order, or by credit or debit card. If you mail your payments to the IRS, use the payment vouchers that come with Form 1040-ES, Estimated Tax for Individuals.